pytoolz/toolz

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A functional standard library for Python.

Stars: 5.2k
Forks: 280
Open beginner issues: 0
Indexed issues: 87
Avg merge: 6d 17h
Merged PRs (30d): 4

Dominant language: Python
License: No license data
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 20, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

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87 open issues indexed

tail(0, seq) returns the whole sequence instead of empty (and is inconsistent across iterable types) Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

pytoolz/toolz#626 · 1 comment · Opened Jun 28, 2026
Plan: adding type annotations one function at a time Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

pytoolz/toolz#622 · 2 comments · Opened Mar 23, 2026
test_has_version fails Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

pytoolz/toolz#612 · 3 comments · Opened Oct 25, 2025
can't unpickle `curry`ied function coming from `__main__` Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

pytoolz/toolz#606 · 1 comment · Opened Apr 19, 2025
Thoughts on partialz with ellipsis? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

pytoolz/toolz#601 · Opened Jan 8, 2025
Feature proposal: `raise`/`throws` function Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

pytoolz/toolz#596 · Opened Dec 4, 2024
`toolz.curry` Seems to Cause 50x+ Performance Slowdown in Certain Cases Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

pytoolz/toolz#583 · Opened Sep 25, 2024
Dictionary chunking / batching (inverting merge_with) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

pytoolz/toolz#580 · Opened Jun 8, 2024
Should we have dissoc_in ? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

pytoolz/toolz#579 · Opened May 12, 2024
Loss of typing information on composed functions Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

pytoolz/toolz#569 · 2 comments · Opened Aug 17, 2023
Split two lists/iterables of objects "wanted_state", "existing_state" in 3 lists "create", "update", "delete" Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

pytoolz/toolz#567 · 5 comments · Opened Jun 1, 2023
0.12.0: pytest is failing in `bench/test_wordcount.py::test_shakespeare` unit because missing bench/shakespeare.txt file Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

pytoolz/toolz#564 · 1 comment · Opened Mar 20, 2023
include a wrapper for itertools.takewhile in (cy)toolz.curried Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

pytoolz/toolz#560 · Opened Jan 21, 2023
Idea: Compose class should be iterable Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

pytoolz/toolz#553 · 2 comments · Opened Sep 25, 2022
get_in function: add example of giving a string to the keys argument Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

pytoolz/toolz#548 · 2 comments · Opened Aug 31, 2022
Idea: J-style forks Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

pytoolz/toolz#544 · 6 comments · Opened Aug 17, 2022
Any good article/video/book/anything that shows how to use toolz for software development? Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

pytoolz/toolz#543 · 1 comment · Opened Aug 13, 2022
`thread_as` function ?? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

pytoolz/toolz#540 · 1 comment · Opened Jul 26, 2022
Combination of map and accumulate Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

pytoolz/toolz#529 · Opened Mar 14, 2022
Idea: compose as an operator Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

pytoolz/toolz#523 · 14 comments · 5 reactions · Opened Aug 31, 2021
0.11.1: sphinx 4.x warnings Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

pytoolz/toolz#521 · 3 comments · Opened Aug 17, 2021
iget for fetching indexes from a non-sequence iterable Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

pytoolz/toolz#517 · 4 comments · Opened Jun 23, 2021
in update_in(), option to disable upsert Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

pytoolz/toolz#515 · 1 comment · Opened May 6, 2021
pipe and **kwargs Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

pytoolz/toolz#510 · 4 comments · Opened Feb 8, 2021
optional static typing for toolz Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

pytoolz/toolz#496 · 16 comments · 26 reactions · Opened Sep 19, 2020
`_check_sigspec` is slow Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

pytoolz/toolz#495 · 4 comments · Opened Jul 23, 2020
Feature request: unpack Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

pytoolz/toolz#486 · 9 comments · Opened Apr 7, 2020
eager map & filter? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

pytoolz/toolz#483 · 6 comments · Opened Mar 18, 2020
Bug in compose introduced in 0.10.0 Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

pytoolz/toolz#481 · 2 comments · Opened Mar 13, 2020
Function `unmerge` Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

pytoolz/toolz#480 · 3 comments · Opened Mar 11, 2020
StopIteration from first() caught by a generator Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

pytoolz/toolz#465 · 16 comments · Opened Sep 21, 2019
A shortcut to create Lambdas? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

pytoolz/toolz#461 · 6 comments · Opened Aug 1, 2019
`diff` doc is unclear Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

pytoolz/toolz#459 · 3 comments · Opened Jul 15, 2019
Extract first truthy value Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

pytoolz/toolz#447 · 2 comments · Opened Apr 13, 2019
consider add "for_each" function Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

pytoolz/toolz#445 · 4 comments · Opened Apr 9, 2019
Extract value from iterable containing exactly one value Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

pytoolz/toolz#444 · 13 comments · Opened Apr 5, 2019
find function? Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

pytoolz/toolz#442 · 5 comments · 1 reaction · Opened Mar 14, 2019
last indexerror: tuple index out of range Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

pytoolz/toolz#424 · 4 comments · Opened Oct 10, 2018
define a new zip, iterating with the longest one Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

pytoolz/toolz#413 · 1 comment · Opened Sep 5, 2018
assoc with multiple keys Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

pytoolz/toolz#402 · 3 comments · Opened Jun 14, 2018
Adding an optional depth/levelspec to map Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

pytoolz/toolz#400 · 2 comments · Opened Jun 7, 2018
num_required_args gives unexpected answer on composed methods Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

pytoolz/toolz#396 · 2 comments · Opened Apr 11, 2018
`select-keys` equivalent Open

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

pytoolz/toolz#392 · 5 reactions · Opened Mar 30, 2018
if/else ternary iterator operation Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

pytoolz/toolz#382 · 2 comments · 2 reactions · Opened Sep 6, 2017
Implement function to partition data Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

pytoolz/toolz#377 · Opened Jul 28, 2017
Feature Request: call function Open

Difficulty 1/5 Under an hour Newbie friendliness 35/100

pytoolz/toolz#368 · 6 comments · Opened Apr 19, 2017
py.test fails on Ubuntu ppc64le Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

pytoolz/toolz#367 · 1 comment · Opened Mar 29, 2017
`get` returns tuples but only accepts lists Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

pytoolz/toolz#363 · 1 reaction · Opened Feb 17, 2017
Deprecate/remove `toolz.sandbox` Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

pytoolz/toolz#362 · 3 comments · Opened Feb 7, 2017
strange bug using jupyter notebook Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

pytoolz/toolz#360 · 3 comments · Opened Jan 12, 2017

pytoolz/toolz

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